how to setup configuration change email alerts on f5

To which configuration change email are you referring? The BIG-IP does not send out email on configuration changes. It can be configured to send email on specific logged events, however. Perhaps that was set up on your system? Otherwise, you may be receiving email from a third-party system that stores configurations.

I would like to setup what ever configuration change are made i should get an email alert on my email ID. want to setup auding log to go to a syslog server and configure it to email an alert every time some one sync a config.